133493856 has 48 divisors (see below), whose sum is σ = 357046704. Its totient is φ = 43656704.

The previous prime is 133493851. The next prime is 133493861. The reversal of 133493856 is 658394331.

It is an interprime number because it is at equal distance from previous prime (133493851) and next prime (133493861).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133493851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8031 + ... + 18206.

It is an arithmetic number, because the mean of its divisors is an integer number (7438473).

Almost surely, 2^133493856 is an apocalyptic number.

133493856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133493856 is an abundant number, since it is smaller than the sum of its proper divisors (223552848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133493856 is a wasteful number, since it uses less digits than its factorization.

133493856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26303 (or 26295 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 133493856 is about 11553.9541283493. The cubic root of 133493856 is about 511.0778894321.

It can be divided in two parts, 13349 and 3856, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 133493856 in words is "one hundred thirty-three million, four hundred ninety-three thousand, eight hundred fifty-six".